On a UA/SKYWEST flight on an RJ from Los Angeles to Phoenix on Monday, the flight attendant announces: "several people on this flight are allergic to peanuts", and, as such, if you have brought your own peanuts on board, you are not to eat them.

I am not aware of that "peanut problem" can be entered in your pnr, nor did I see any passengers discuss the problem with her, so I assume that either she had a "peanut problem" or simply she did not want to have to deal with the refuse generated by peanut eaters who bring on board thier own stash.

She also spoke to us the entire flight like we were two year olds.